//
//  ViewController.m
//  07-UIViewcontrollerLifeCycle
//
//  Created by dllo on 16/7/22.
//  Copyright © 2016年 LST. All rights reserved.
//

#import "ViewController.h"
#import "FirstViewController.h"

@interface ViewController ()

@end

@implementation ViewController
#pragma mark - lifeCycle
// push出个一个新的控制器时
// loadView与Didload 只走一次
- (void)loadView {
    [super loadView];
    NSLog(@"%@--%s", [self class], __FUNCTION__);
}
- (void)viewDidLoad {
    [super viewDidLoad];
    self.view.backgroundColor = [UIColor redColor];
    // Do any additional setup after loading the view, typically from a nib.
//    NSLog(@"%@--%s", [self class], __FUNCTION__);
    self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(clickLeft:)];
}
// 视图将要出现时就会调用
- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    NSLog(@"%@--%s", [self class], __FUNCTION__);
}
// 视图完全出现, 就会调用
- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];
    NSLog(@"%@--%s", [self class], __FUNCTION__);
}
// 视图将要消失时, 就会调用 只有一点消失就算
- (void)viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];
    NSLog(@"%@--%s", [self class], __FUNCTION__);
}
// 视图完全消失, 就会调用
- (void)viewDidDisappear:(BOOL)animated {
    [super viewDidDisappear:animated];
    NSLog(@"%@--%s", [self class], __FUNCTION__);
}
#pragma mark - ButtonClicked
- (void)clickLeft:(UIBarButtonItem *)leftBtn {
    FirstViewController *first = [[FirstViewController alloc] init];
    [self.navigationController pushViewController:first animated:YES];
}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end
